SN54LS170J ,4 x 4 REGISTER FILE OPEN-COLLECTORSN54/74LS1704 x 4 REGISTER FILEOPEN-COLLECTORThe TTL /MSI SN54 /74LS170 is a high-speed, low-power ..
SN54LS170J ,4 x 4 REGISTER FILE OPEN-COLLECTORfeatures3-state outputs.• Simultaneous Read/Write Operation• Expandable to 512 Words of n-BitsJ SUF ..
SN54LS170J ,4 x 4 REGISTER FILE OPEN-COLLECTOR
SN54LS173AJ ,4-bit D-type register with 3-state outputsmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage, V ..
SN54LS173J ,4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS
SN54LS173J ,4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS
SN74HC00DG4 ,Quad 2-Input Positive-NAND Gates 14-SOIC -40 to 85Electrical Characteristics....... 512.3 Receiving Notification of Documentation Updates 116.6 Switc ..
SN74HC00DR ,Quad 2-Input Positive-NAND GatesMaximum Ratings(1)over operating free-air temperature range (unless otherwise noted)MIN MAX UNITSup ..
SN74HC00DRG4 ,Quad 2-Input Positive-NAND Gates 14-SOIC -40 to 85Maximum Ratings.. 411.2 Layout Example ...... 106.2 ESD Ratings........ 412 Device and Documentatio ..
SN74HC00N ,Quad 2-Input Positive-NAND GatesLogic Diagram (Positive Logic)• Power: Telecom or Server AC/DC SupplyA(Single Controller: Analog an ..
SN74HC00NSLE ,Quad 2-Input Positive-NAND GatesFeatures list 1• Removed Ordering Information table; see POA at the end of data sheet...... 1• Chan ..
SN74HC00NSR ,Quad 2-Input Positive-NAND GatesMaximum Ratings.. 411.2 Layout Example ...... 106.2 ESD Ratings........ 412 Device and Documentatio ..
SN54LS170J-SN74LS170N
4 x 4 REGISTER FILE OPEN-COLLECTOR
4 x 4 REGISTER FILE
OPEN-COLLECTORThe TTL/MSI SN54 /74LS170 is a high-speed, low-power 4 x 4 Register
File organized as four words by four bits. Separate read and write inputs, both
address and enable, allow simultaneous read and write operation.
Open-collector outputs make it possible to connect up to 128 outputs in a
wired-AND configuration to increase the word capacity up to 512 words. Any
number of these devices can be operated in parallel to generate an n-bit
length.
The SN54/74LS670 provides a similar function to this device but it features
3-state outputs. Simultaneous Read/Write Operation Expandable to 512 Words of n-Bits Typical Access Time of 20 ns Low Leakage Open-Collector Outputs for Expansion Typical Power Dissipation of 125 mW
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
CONNECTION DIAGRAM DIP (TOP VIEW)VCC WA WB EW Q1ER Q2 D4 RB RA Q4 Q3 GND
PIN NAMES LOADING (Note a)D1–D4
WA, WB
Q1–Q4
Data Inputs
Write Address Inputs
Write Enable (Active LOW) Input
Read Address Inputs
Read Enable (Active LOW) Input
Outputs (Note b)
NOTES:
a. 1 TTL Unit Load (U.L.) = 40 μA HIGH/1.6 mA LOW.
b. The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74)
b. Temperature Ranges. The Output HIGH drive must be supplied by an external resistor to VCC.
